Improvement in blow-pipes



NITED STATES PATENT OFFICE.,V Y

JOSEPH HOLLELY, or New YORK, N. Y.

IMPROVEMENT IN BL'OW-PIPES.

Specification forming part of Letters Patent No. 19,636, dated March 16, 1858.

To all whom it may concern:

Be it known that I, JOSEPH HOLLELY, of New York, in the county of New York and State of New York, have invented a new and Improved Blow-Pipe; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part of this specification- Figure l being alongitudinal vertical section in the center of the blow-pipe arranged in proper position, together with all accompanying apparatus; Fig. 2, a longitudinal section of a portion detached, showing certain parts differently arranged from their position as represented in Fig. l; Fig. 3, a similar section of the same portion, exhibiting astill different position of the said parts; Fig. 4, averi a jet of steam generated in a suitable boiler or generator, the steambeing itself inflammable, as that of alcohol, and thereby increasing the intensity of the heat, or uninliammable,as that of water. y

A suitable stand or frame, A, having been provided, the boiler or generator B is placed thereon, so as to admit the application of a lamp, C, beneath it, for the purpose of heating the liquid-therein, in order to produce the steam. On another part of the stand another lamp, D, is so situated as to receive the jets of steam through its Haine to create the necessary heat required in the various uses of blowpipes. In order to adjust the darne of the lamp D to the exact height desired for receiving the jets properly, it may have a wick-tube adjustable up and down by means of a device clearly represented at w in Fig. l.

To insure safety and the desired variation of pressure, a safety-valve is required to be at tached to the boiler. I employ an improved safety-valve for the purpose, of the following construction: f

The form of the valve E may be the Ordinar conical, and it may rest in a seat, G, of no unusual construction, to be screwed or otherwise attached air-tight to the top of the boiler.

The aperture in which the valve-seat is in-` equivalent, d, which embraces the projecting stem a of the valve. IThe valve-stem has a screw-thread, f, which enters a corresponding yscrewin the bar c, as represented. Theupper end of the valve terminates in a attened or milled head, for grasping with the fingers to I turn the valve. Thus by turning the valve itself one way or the other the bar c is raised or lowered, and consequently the force of the spring d is increased or diminished at pleasure, thereby varying the amount of pressure allowed to the steam in the boiler. By this employment of the valve itself for its own regulator, not` only is the whole made more simple and cheap, but it is less liable to derangement, and is more readily managed. To

obviate any liability of the aperture round Y the valve-stem being stopped by the spring d, side branching holes, g g, Fig. 4, may be made to allow a free discharge ofthe steam.

Into the top of the boiler is inserted a faucetseat, H, with a bent passage, h, as represented. Over the mouth of this seat the barrel Iof the faucet is screwed or otherwise secured., 'Two jet-pipes, M N, project from the faucet-barrel, substantially as represented, the orifice tof one being larger, and the other orifice, u, being very fine, for producing the finest jet possible. The inner end of the barrel has three apertures, Hm, situated in a row, as shown in the drawings. The outer end of the barrel has only two apertures, n 0,- situated, respectively, opposite to the upper and lower apertures, t m, in the inner end of the faucetbar rel and communicating, respectively, with the two jet-pipes. The spigot or key L of the faucet has three perforations, p r s, the perforation 'p communicating horizontally or directly between the two upper opposite apertures, i n, of the faucet-barrel, the perforations s communicating in like manner between Athe two lower opposite apertures, m o, and the other perforation, i', communicating between the lower inner aperture, m, and the upper outer aperture, n, of the barrel. The upper and lower perforaticns, p s, are at right angles (or at equivalent angles) to each other, and the middle perforation, r, is parallel with either the lower perforation, s, as represented in the drawings, or with the upper perforation, p. Thus arranged, when the key L is situated as represented in Fig. 1, the middle perforation, r, opens a communication between the middle inner aperture, Z, and the upper outer aperture, n, while the lower perforation, s, opens a direct communication between t-he inner and outer lower apertures. Thus jets of steam are projected simultaneousl y from bothjet-pipes whenever a double jet may be required. Then by turning the lkey L half arevolution the middle perforation, r, will be closed, while the lower aperture, s, will still offer a direct communication between the two lower apertures, m o, as represented in Fig. 2, so that only the lower or fine jetpipe,'N, will projecta jet. By turning the key L one-fourth of a revolution from either of the positions shown in Figs. 1 and 2, or in the position shown in Fig. 3, both the middle and lower perforations will be closed, and the upper perforation, 19,' will open a direct communication between the inner and outer apertures, z' and n, and thus allow ajet only to be projected from the upper coarser jetpipe, M. By this simple arrangement, therefore, either jet or both jets together may be used at pleasure. By turning the keyvabout one-eighth of a revolution from either of the positions above described,

both jets will be stopped.

The arrangement of the faucet-seat H on the top of the boiler prevents the accumulation of condensed steam there, and thus renders the jet always pure; and by having the faucet as far from the boiler as convenience will allow and as near the iiaine of the lamp D as the heat thereof will permit, together with the situation of the faucet-seat at the top of the boiler, a finer, longer, steadicr, and purer jet is produced, as I have ascertained by repeated eX- perinients.

I disclaim all arrangements of blow-pipes substantially different from that above described.

What I claim as my invention, and desire to secure by Letters Patent, is

A blow-pipe provided with a faucet, l, spigot L, andjetpipes M N, constructed and arranged as described, in connection with a safety-valve, E, arranged and operating in the manner set forth, lor the purposes herein specified.

The above specification of my improved blow-pipe signed by me this 6th day of February, 1858.

JOSEPH HOLLELY.

Vi tnesses:

P. V. R. STANTON, J oHN THOMPSON. 

